<sys/platform/x86.h>: Add AVX512_FP16 support

Add AVX512_FP16 support to <sys/platform/x86.h>.

diff --git a/manual/platform.texi b/manual/platform.texi
index 0dd12a4..4f5fdff 100644 (file)
--- a/manual/platform.texi
+++ b/manual/platform.texi
@@ -211,6 +211,9 @@ The supported processor features are:
 @code{AVX512_BITALG} -- The AVX512_BITALG instruction extensions.
 
 @item
+@code{AVX512_FP16} -- The AVX512_FP16 instruction extensions.
+
+@item
 @code{AVX512_IFMA} -- The AVX512_IFMA instruction extensions.
 
 @item

diff --git a/sysdeps/x86/cpu-features.c b/sysdeps/x86/cpu-features.c
index 6551df1..4ecb8ce 100644 (file)
--- a/sysdeps/x86/cpu-features.c
+++ b/sysdeps/x86/cpu-features.c
@@ -175,6 +175,8 @@ update_usable (struct cpu_features *cpu_features)
                                          AVX512_VP2INTERSECT);
                  /* Determine if AVX512_BF16 is usable.  */
                  CPU_FEATURE_SET_USABLE (cpu_features, AVX512_BF16);
+                 /* Determine if AVX512_FP16 is usable.  */
+                 CPU_FEATURE_SET_USABLE (cpu_features, AVX512_FP16);
                }
            }
        }

diff --git a/sysdeps/x86/sys/platform/x86.h b/sysdeps/x86/sys/platform/x86.h
index 22bb284..00cd151 100644 (file)
--- a/sysdeps/x86/sys/platform/x86.h
+++ b/sysdeps/x86/sys/platform/x86.h
@@ -259,7 +259,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
 #define bit_cpu_IBT            (1u << 20)
 #define bit_cpu_INDEX_7_EDX_21 (1u << 21)
 #define bit_cpu_AMX_BF16       (1u << 22)
-#define bit_cpu_INDEX_7_EDX_23 (1u << 23)
+#define bit_cpu_AVX512_FP16    (1u << 23)
 #define bit_cpu_AMX_TILE       (1u << 24)
 #define bit_cpu_AMX_INT8       (1u << 25)
 #define bit_cpu_IBRS_IBPB      (1u << 26)
@@ -478,7 +478,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
 #define index_cpu_IBT          COMMON_CPUID_INDEX_7
 #define index_cpu_INDEX_7_EDX_21 COMMON_CPUID_INDEX_7
 #define index_cpu_AMX_BF16     COMMON_CPUID_INDEX_7
-#define index_cpu_INDEX_7_EDX_23 COMMON_CPUID_INDEX_7
+#define index_cpu_AVX512_FP16  COMMON_CPUID_INDEX_7
 #define index_cpu_AMX_TILE     COMMON_CPUID_INDEX_7
 #define index_cpu_AMX_INT8     COMMON_CPUID_INDEX_7
 #define index_cpu_IBRS_IBPB    COMMON_CPUID_INDEX_7
@@ -697,7 +697,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
 #define reg_IBT                        edx
 #define reg_INDEX_7_EDX_21     edx
 #define reg_AMX_BF16           edx
-#define reg_INDEX_7_EDX_23     edx
+#define reg_AVX512_FP16                edx
 #define reg_AMX_TILE           edx
 #define reg_AMX_INT8           edx
 #define reg_IBRS_IBPB          edx

diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c
index d160f7c..7262c3a 100644 (file)
--- a/sysdeps/x86/tst-get-cpu-features.c
+++ b/sysdeps/x86/tst-get-cpu-features.c
@@ -191,6 +191,7 @@ do_test (void)
   CHECK_CPU_FEATURE (PCONFIG);
   CHECK_CPU_FEATURE (IBT);
   CHECK_CPU_FEATURE (AMX_BF16);
+  CHECK_CPU_FEATURE (AVX512_FP16);
   CHECK_CPU_FEATURE (AMX_TILE);
   CHECK_CPU_FEATURE (AMX_INT8);
   CHECK_CPU_FEATURE (IBRS_IBPB);
@@ -345,6 +346,7 @@ do_test (void)
   CHECK_CPU_FEATURE_USABLE (TSXLDTRK);
   CHECK_CPU_FEATURE_USABLE (PCONFIG);
   CHECK_CPU_FEATURE_USABLE (AMX_BF16);
+  CHECK_CPU_FEATURE_USABLE (AVX512_FP16);
   CHECK_CPU_FEATURE_USABLE (AMX_TILE);
   CHECK_CPU_FEATURE_USABLE (AMX_INT8);
   CHECK_CPU_FEATURE_USABLE (IBRS_IBPB);